AGN, GRB and danger for Earth

Which would be more dangerous and why: Eta Carina exploding as a gamma-ray burst, or
the black hole at the Galactic centre accreting material at the same rate as a typical luminous
Seyfert galaxy?

I have simply estimated the flux from both of them given the average energy output of GRBs and AGNs, and their distance from the Su with inverse square law. Does it make sense that the GRB, closer and slightly more energetic is way more dangerous for life on Earth?

Not entirely, a beamed jet could be a danger. They appear to be collimated not unlike a laser beam due to intense magnetic fields of the star. It does not, however, appear Eta Carinae is much of a threat. Its rotational axis is not aligned with earth and is unlikely to become a gamma burster, more likely a garden variety stellar collapse supernova. The SMBH is an even more remote threat. It has no significant 'food' source at present and that is unlikely to change for millions, if not billions of years.